Image acquisition device for detecting position of wiring connection point of PCB (Printed Circuit Board)

Abstract

The utility model provides an image acquisition device for PCB wiring connection point position detection, and the device comprises a feeding assembly line which is provided with a plurality of rollers which are arranged at intervals in a conveying direction as a first direction and are respectively arranged in a direction perpendicular to the conveying direction as a second direction; the discharging assembly line is provided with a flat belt which corresponds to the feeding assembly line and is arranged in the first direction; the regulation part is used for regulating the PCB to be tested on the feeding assembly line in the first direction and the second direction; the flattening part is used for flattening the PCB on the flat belt when the PCB to be detected is conveyed to a preset detection position by the blanking assembly line, and comprises a transparent pressing plate positioned above the flat belt; the image acquisition part comprises a plurality of cameras in one-to-one correspondence with the plurality of wiring connection points, and each camera is mounted at a preset mounting position; and the controller is electrically connected with the feeding assembly line, the discharging assembly line, the regulation part and the cameras.

Description

Technical Field

[0001] The utility model belongs to the technical field of PCB board detection, and in particular relates to an image acquisition device for detecting the position of a wiring connection point of a PCB board. Background Art

[0002] Many trace connection points on the PCB board require strict spacing requirements, that is, the spacing between several trace connection points must meet strict requirements. If the position of a trace connection point is offset, the spacing between the trace connection point and multiple adjacent trace connection points will be unqualified, resulting in product scrapping. Therefore, position detection of trace connection points on the PCB board is an important part of ensuring PCB quality in production.

[0003] The optical inspection equipment currently on the market for the location of the connection points of PCB traces first uses an image acquisition device to capture an image of the PCB board, and then uses a microprocessor to compare and analyze the captured image with a pre-stored standard image to determine whether the location of the connection points of the traces on the PCB board meets the requirements.

[0004] However, existing image acquisition devices mainly adopt the method of manually placing the PCB board and aligning and positioning the PCB board at a predetermined position with the naked eye. This method of manual placement and alignment is not only labor-intensive and inefficient for workers, but also difficult to meet the requirements of assembly line automation operations. In addition, human errors are prone to occur during manual operation, resulting in poor consistency in image quality. Utility Model Content

[0005] The utility model is developed to solve the above technical problems, and aims to provide an image acquisition device for detecting the position of connection points of PCB wiring.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides an image acquisition device for detecting the position of a connection point of a PCB board wiring, which has the following characteristics: a loading line, which has a plurality of rollers which are arranged at intervals in a conveying direction of the loading line as a first direction and are arranged respectively in a direction perpendicular to the conveying direction as a second direction; a unloading line, which has a flat belt which is arranged corresponding to the rear end of the loading line and is arranged along the first direction; a regulating part, which is used to regulate a PCB board to be detected on the loading line in the first direction and the second direction respectively; a flattening part, which is used to flatten the PCB board to be detected on the flat belt when the PCB board to be detected is conveyed to a predetermined detection position by the unloading line, and comprises a pressing plate made of a transparent material which is located above the flat belt and can rise or fall relative to the flat belt; an image acquisition part, which comprises a plurality of cameras which are located above the pressing plate and correspond to a plurality of wiring connection points one by one, each camera being installed at a predetermined installation position and being used to acquire an image of the PCB board at the position of the corresponding wiring connection point; and a controller, which is electrically connected to the loading line, the unloading line, the regulating part, the regulating part and the plurality of cameras respectively.

[0008] In the image acquisition device for detecting the position of connection points of PCB board wiring provided by the utility model, it can also have the following characteristics: wherein, the regulating part includes a baffle unit located at the rear end of the loading line, and a positioning unit located below the roller, the baffle unit is used to regulate the PCB board in the first direction, and includes a baffle and a baffle driving member for driving the baffle to rise or fall relative to the roller, when the baffle driving member drives the baffle to rise, the upper end of the baffle extends upward to above the roller, the positioning unit is used to regulate the PCB board in the second direction, and includes a plurality of positioning rods that are spaced apart in the first direction and whose upper ends extend upward to above the roller, and a positioning rod driving member for simultaneously driving the plurality of positioning rods to move in the second direction.

[0009] In the image acquisition device for detecting the position of connection points of PCB board wiring provided by the utility model, it can also have the following characteristics: wherein, the positioning unit also includes a positioning rod mounting component for mounting multiple positioning rods, the positioning rod mounting component is located below the roller, and has a guide rail arranged along the second direction, a slider slidably mounted on the guide rail, and a movable plate fixedly set on the slider and arranged along the first direction, and multiple positioning rods are respectively fixedly mounted on the movable plate.

[0010] The image acquisition device for detecting the position of connection points of PCB wiring provided by the utility model may also have the following features: wherein the positioning rod driving component has a driving motor and a transmission belt, and the transmission belt is respectively connected to the rotating shaft of the driving motor and the moving plate.

[0011] In the image acquisition device for detecting the position of connection points of PCB board wiring provided by the utility model, it can also have the following characteristics: wherein, the flattening part also includes a pressure plate lifting drive unit for driving the pressure plate to rise or fall, the pressure plate drive unit includes a lifting frame and a pressure plate lifting drive member, the lifting frame has a lifting plate and two support rods respectively, the lifting plate is located below the flat belt and arranged along the second direction, the support rod is located on the outside of the flat belt, the lower end is fixedly arranged on the end of the lifting plate, the upper end is connected to the pressure plate, the pressure plate lifting drive member is connected to the lifting plate, and is used to drive the lifting frame to rise or fall, when the pressure plate lifting drive member drives the lifting frame to descend, the pressure plate flattens the PCB board on the flat belt.

[0012] In the image acquisition device for detecting the position of connection points of PCB board wiring provided by the utility model, it can also have the following characteristics: wherein the image acquisition unit also includes a camera mounting plate for mounting a camera, and a plurality of array holes are provided on the camera mounting plate, and each array hole corresponds to a first direction coordinate value in a first direction and a second direction coordinate value in a second direction.

[0013] The image acquisition device for detecting the position of connection points of PCB wiring provided by the utility model may also have the following feature: wherein, first direction coordinate scale values ​​and second direction coordinate scale values ​​corresponding to each array hole are provided at the edges around the mounting plate.

[0014] The image acquisition device for detecting the position of connection points of PCB board wiring provided by the utility model may also have the following features: wherein the image acquisition unit also includes two camera lifting drives for simultaneously driving multiple cameras to perform rising or falling actions, and the two camera lifting drives are symmetrically arranged and respectively connected to the mounting plate.

[0015] The image acquisition device for detecting the position of connection points of PCB wiring provided by the utility model may also have the following features: wherein, the number of the flat belts is two, and the two flat belts are symmetrically arranged in the second direction.

[0016] The image acquisition device for detecting the position of connection points of PCB board wiring provided by the utility model may also have the following features: wherein the unloading assembly line also has an in-place sensor for sensing whether the PCB board located on the unloading assembly line is conveyed to a predetermined detection position, and the in-place sensor is arranged between two flat belts and below the upper surface of the flat belts.

[0017] Function and effect of utility model

[0018] According to the image acquisition device for detecting the position of the connection point of the wiring of the PCB board involved in the utility model, because it includes a loading assembly line, a unloading assembly line, a regulating part, a flattening part, an image acquisition part and a controller, the unloading assembly line is arranged corresponding to the loading assembly line, the regulating part can regulate the PCB board to be tested on the loading assembly line in the conveying direction of the loading assembly line and in the direction perpendicular to the conveying direction respectively, the flattening part can flatten the PCB board to be tested on the flat belt when the PCB board is conveyed to the predetermined detection position by the unloading assembly line, and the image acquisition part includes a plurality of wiring connection points located above the pressure plate and connected to the image acquisition part. Multiple cameras corresponding to each other are installed at a predetermined installation position, and can collect images of the PCB board at the position of the corresponding wiring connection point. The controller is electrically connected to the loading line, the unloading line, the regulation part, the regulation part and the multiple cameras, respectively, and can control these mechanisms to work. Therefore, this embodiment can realize the automatic collection of PCB board images without manual placement of the PCB board and alignment and positioning. It has extremely high image collection efficiency, can better meet the requirements of assembly line automation operation, and also avoids the problem of human errors that are prone to manual operation, ensuring the consistency of image quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of an image acquisition device for detecting the position of a connection point of a PCB wiring in an embodiment of the utility model;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of a feeding assembly line and a baffle unit in an embodiment of the utility model;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the positioning unit in the embodiment of the utility model;

[0022] Figure 4 It is a three-dimensional structural schematic diagram of a material unloading assembly line and a flattening part in an embodiment of the utility model;

[0023] Figure 5 is a schematic diagram of the three-dimensional structure of the flattening part in the embodiment of the utility model; and

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the image acquisition unit in the embodiment of the utility model. DETAILED DESCRIPTION

[0025] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention.

[0026] Figure 1It is a three-dimensional structural schematic diagram of an image acquisition device for detecting the position of connection points of PCB wiring in an embodiment of the utility model.

[0027] like Figure 1 As shown, in this embodiment, the image acquisition device 100 for detecting the position of the connection point of the PCB board wiring includes a base plate 10, a loading line 20, a regulating part 30, a unloading line 40, a flattening part 50, an image acquisition part 60 and a controller (not shown in the figure).

[0028] like Figure 1 As shown, the base plate 10 is a rectangular steel plate, which is used to install the unloading assembly line 40, the flattening part 50 and the image acquisition part 60.

[0029] Figure 2 It is a three-dimensional structural schematic diagram of a feeding assembly line and a baffle unit in an embodiment of the utility model.

[0030] like Figure 1 and Figure 2 As shown, the loading line 20 is located outside the base plate 10, and is a roller-type loading and unloading line structure, having a plurality of rollers 21. The plurality of rollers 21 are arranged at intervals in the conveying direction F of the loading line 20 as a first direction, and are arranged respectively along a direction perpendicular to the conveying direction F as a second direction.

[0031] In this embodiment, an induction grating 22 is further provided above the front end of the loading assembly line 20, which can effectively prevent the PCB boards from being connected and skewed seriously.

[0032] Figure 3 It is a three-dimensional structural schematic diagram of the positioning unit in the embodiment of the utility model.

[0033] like Figures 1 to 3 As shown, the regulating unit 30 is used to regulate the PCB board to be tested on the loading line 20 in the first direction and the second direction respectively, and includes a baffle unit 31 and a positioning unit 32.

[0034] like Figure 1 and Figure 2 As shown, the baffle unit 31 is located at the rear end of the loading line 20 and is used to regulate the PCB board in the first direction. The baffle unit 31 includes a baffle driving member 311 and a baffle 312.

[0035] The baffle driving member 311 is a power cylinder, which is located below the roller 21 and fixedly arranged at the middle position of the rear end of the loading assembly line 20. In this embodiment, the baffle driving member 311 is a pneumatic cylinder. Of course, according to actual needs, the baffle driving member 311 can also be a hydraulic cylinder or an electric cylinder.

[0036] The baffle 312 is fixedly mounted on the driving rod of the baffle driver 311, and can be raised or lowered relative to the roller under the drive of the baffle driver 311. When the baffle driver 311 drives the baffle 312 to rise, the upper end of the baffle 312 extends upward to above the roller 21, blocking the PCB from continuing to move, thereby achieving regulation of the PCB on the loading line 20 in the first direction.

[0037] like Figure 1 and Figure 3 As shown, the positioning unit 32 is located below the roller 21 and is used to regulate the PCB board in the second direction. The positioning unit 32 includes a mounting plate 321, two guide rails 322, two sliders 323, a moving plate 324, a plurality of positioning rods 325 and a positioning rod driving component 326.

[0038] The mounting plate 321 is a rectangular steel plate, which is fixedly disposed on the loading line 20 at a position below the roller 21 and is used to install the guide rail 322 , the slider 323 , the moving plate 324 , the positioning rod 325 and the positioning rod driving component 326 .

[0039] The two guide rails 322 are disposed on the mounting plate 321 at intervals in the first direction and are arranged along the second direction respectively.

[0040] The two sliders 323 are slidably mounted on the two guide rails 322 .

[0041] The moving plate 324 is arranged along the first direction and fixedly disposed on the two sliders 323 so as to be able to reciprocate in the second direction.

[0042] A plurality of positioning rods 325 are arranged at intervals in the first direction; the lower end of each positioning rod 325 is fixedly mounted on the movable plate 324 , and the upper end thereof passes upward through the gap between two adjacent rollers 21 and extends above the roller 21 .

[0043] The positioning rod driving component 326 is installed on the mounting plate 321 and connected to the moving plate 324, and is used to drive the moving plate 324 to move in the second direction, thereby simultaneously driving the plurality of positioning rods 325 to move in the second direction, thereby achieving the regulation of the PCB board on the loading assembly line 20 in the second direction. In this embodiment, the positioning rod driving component 326 has a driving motor 326a and a transmission belt 326b, and the transmission belt 326b is connected to the rotating shaft of the driving motor 326a and the moving plate 324 respectively.

[0044] Figure 4 It is a three-dimensional structural schematic diagram of a material unloading assembly line and a flattening part in an embodiment of the utility model.

[0045] like Figure 1 and Figure 4 As shown, the unloading assembly line 40 is arranged corresponding to the rear end of the loading assembly line 20, and is a flat belt type unloading and loading assembly line structure, having two flat belts 41; the two flat belts 41 are arranged along the first direction and are symmetrically arranged at intervals in the second direction. In this embodiment, the unloading assembly line 40 also has an in-position sensor (not shown in the figure) for sensing whether the PCB board located on the unloading assembly line 40 is conveyed to the predetermined detection position, and the in-position sensor is arranged between the two flat belts 41 and below the upper surface of the flat belts 41.

[0046] Figure 5 It is a schematic diagram of the three-dimensional structure of the flattening part in the embodiment of the utility model.

[0047] like Figure 1 , Figure 4 as well as Figure 5 As shown, the flattening unit 50 is used to flatten the PCB board to be tested on the flat belt 41 when the PCB board to be tested is transported to the predetermined testing position by the unloading assembly line 40. The flattening unit 50 includes a pressing plate 51 and a pressing plate lifting driving unit 52.

[0048] The pressing plate 51 is a rectangular flat plate made of a transparent material, which is located above the flat belt 41 and can be raised or lowered relative to the flat belt 41. In this embodiment, the pressing plate 51 is a transparent glass plate.

[0049] The pressing plate lifting driving unit 52 is used to drive the pressing plate 51 to ascend or descend, and comprises a lifting frame 521 , a pressing plate lifting driving member 522 and two guiding members 523 .

[0050] The lifting frame 521 has a lifting plate 521a and two supporting rods 521b. The lifting plate 521a is located below the flat belt 41 and arranged along the second direction; the supporting rod 521b is located outside the flat belt 41, the lower end of which is fixedly connected to the end of the lifting plate 521a, and the upper end of which extends upward and is connected to the pressing plate 51.

[0051] The pressing plate lifting driving member 522 is a power cylinder, which is fixedly arranged on the base plate 10, and its driving rod is connected to the middle position of the lifting plate 521a of the lifting frame 521, and is used to drive the lifting frame 521 to rise or fall, thereby driving the pressing plate 51 to rise or fall relative to the flat belt 41. When the pressing plate lifting driving member 522 drives the lifting frame 521 to descend and then drives the pressing plate to descend, the pressing plate 51 presses the PCB board flat on the flat belt 41. In this embodiment, the pressing plate lifting driving member 522 is a pneumatic cylinder. Of course, according to actual needs, the pressing plate lifting driving member 522 can also be a hydraulic cylinder or an electric cylinder.

[0052] The two guide members 523 are used to guide the lifting and lowering of the lifting frame 521. They are symmetrically arranged on both sides of the pressure plate nerve driver 522. They are a guide sleeve and guide rod structure, in which the guide sleeve is fixedly installed on the base plate 10, and the upper end of the guide rod is fixedly connected to the lifting plate 521a of the lifting frame 521.

[0053] Figure 6 It is a schematic diagram of the three-dimensional structure of the image acquisition unit in the embodiment of the utility model.

[0054] like Figure 1 and Figure 6 As shown, the image acquisition unit 60 is installed above the unloading assembly line 40, and is used to simultaneously detect images at multiple wiring connection points on the PCB board. The image acquisition unit 60 includes four support columns 61, a camera mounting plate 62, multiple cameras 63, and two camera lifting and driving parts 64.

[0055] The four support columns 61 are respectively located at the four corners of the unloading assembly line 40 , and the lower end of each support column 61 is fixedly mounted on the base plate 10 .

[0056] The camera mounting plate 62 is movably mounted on the upper ends of the four support columns 61, and is provided with a plurality of array holes 621, each array hole 621 corresponding to a first direction coordinate value in the first direction and a second direction coordinate value in the second direction. In this embodiment, the first direction coordinate scale value 622 and the second direction coordinate scale value 623 corresponding to each array hole 621 are provided at the edges of the mounting plate 62.

[0057] Multiple cameras 63 correspond one-to-one to multiple wiring connection points on the PCB board to be tested; each camera 63 is installed at a predetermined installation position on the camera installation plate 62, and is used to obtain an image at a position on the PCB board located at a corresponding wiring connection point.

[0058] The two camera lifting driving members 64 are symmetrically arranged in the second direction and are installed on the corresponding two support columns 61 through the connecting plate 64a, and are used to drive the camera mounting plate 62 to rise or fall, thereby driving the multiple cameras 63 to rise or fall at the same time, so as to facilitate the adjustment of the focal length of the camera to obtain a clear image. The camera lifting driving member 62 is a power cylinder, and its driving rod is connected to the camera mounting plate 62. In this embodiment, the camera lifting driving member 62 is a pneumatic cylinder. Of course, according to actual needs, the camera lifting driving member 62 can also be a hydraulic cylinder or an electric cylinder.

[0059] The controller is a single chip microcomputer, which is electrically connected to the loading line 20, the regulating part 30, the unloading line 40, the flattening part 50 and the image acquisition part 60 respectively, and is used to control these mechanisms to work.

[0060] In this embodiment, the working process of the image acquisition device 100 for detecting the position of the connection point of the PCB wiring is as follows:

[0061] The loading assembly line 20 operates to move the PCB board to be tested thereon toward the unloading assembly line 40, and the controller controls the baffle driving member 311 to operate to raise the baffle 312; after the baffle 312 blocks the PCB board, the controller controls the loading assembly line 20 to stop operating.

[0062] The controller controls the positioning rod driving component 326 to work, driving the positioning rod 325 to move in the second direction, thereby positioning the PCB board to a predetermined position in the second direction.

[0063] The controller controls the baffle driving member 311 to operate so that the baffle 312 descends, and then controls the loading assembly line 20 to operate so that the regulated PCB boards thereon flow onto the flat belt 41 of the unloading assembly line 40 .

[0064] The unloading assembly line 40 conveys the PCB flowing thereon. When the in-place sensor detects that the PCB reaches a predetermined detection position, it sends an in-place sensing signal to the controller, and the controller controls the unloading assembly line 40 to stop working according to the in-place sensing signal.

[0065] The controller controls the pressing plate lifting driving unit 52 to work, so that the pressing plate 51 is lowered, and the PCB board is flattened on the flat belt 41 of the unloading assembly line 40.

[0066] The controller controls all cameras 63 to work and simultaneously acquires images of the PCB board at the location of each trace connection point.

[0067] The controller controls the platen lifting drive unit 52 to operate, so that the platen 51 rises, and then controls the unloading assembly line 40 to operate, so as to take out the PCB board thereon, thus completing the image acquisition work of a PCB board.

[0068] Example Function and Effect

[0069] According to the image acquisition device for detecting the position of the connection point of the wiring of the PCB board involved in this embodiment, because it includes a loading assembly line, a unloading assembly line, a regulating part, a flattening part, an image acquisition part and a controller, the unloading assembly line is arranged corresponding to the loading assembly line, the regulating part can regulate the PCB board to be tested on the loading assembly line in the conveying direction of the loading assembly line and in the direction perpendicular to the conveying direction respectively, the flattening part can flatten the PCB board to be tested on the flat belt when the PCB board is conveyed to the predetermined detection position by the unloading assembly line, and the image acquisition part includes a controller located above the pressure plate and aligned with the plurality of wiring connection points. A corresponding plurality of cameras, each camera is installed at a predetermined installation position, and can collect images of the PCB board at the position of the corresponding wiring connection point. The controller is electrically connected to the loading line, the unloading line, the regulation part, the regulation part and the plurality of cameras, respectively, and can control these mechanisms to work. Therefore, this embodiment can realize the automatic collection of the PCB board image without manual placement of the PCB board and alignment and positioning. It has extremely high image collection efficiency, can better meet the requirements of the assembly line automation operation, and also avoids the problem of human error that is prone to occur in manual operation, thereby ensuring the consistency of image quality.

[0070] In addition, because the regulating part includes a baffle unit located at the rear end of the loading line and a positioning unit located below the roller, the baffle includes a baffle and a baffle driving component for driving the baffle to rise or fall relative to the roller, the positioning unit includes a plurality of positioning rods that are spaced apart in a first direction and whose upper ends extend upward to above the roller, and a positioning rod driving component for simultaneously driving the plurality of positioning rods to move in a second direction, the structure is compact and occupies less space.

[0071] In addition, because the flattening part also includes a pressure plate lifting drive unit for driving the pressure plate to rise or fall, the pressure plate drive unit contains a lifting frame and a pressure plate lifting drive component, the lifting frame has a lifting plate and two support rods respectively, the lifting plate is located below the flat belt, the support rods are located on the outside of the flat belt and the upper end is connected to the pressure plate, the structure is compact and occupies less space.

[0072] In addition, because a plurality of array holes are provided on the camera mounting plate, each array hole corresponds to a first direction coordinate value in the first direction and a second direction coordinate value in the second direction, the accuracy of the camera installation position is ensured, and the accuracy and reliability of image acquisition are further ensured.

[0073] In addition, because the unloading assembly line also has an in-position sensor, it can sense whether the PCB board on the unloading assembly line is transported to the predetermined detection position, thereby ensuring the accuracy of the detection position of the PCB board and further ensuring the accuracy and reliability of image acquisition.

[0074] Those skilled in the art should understand that the above embodiments are preferred cases of the present invention, which are intended to enable those skilled in the art to understand the intention of the present invention, rather than to limit the protection scope of the present invention.

Claims

1. An image acquisition device for detecting the position of connection points of PCB wiring, characterized in that: include: A loading line, comprising a plurality of rollers which are arranged at intervals in a conveying direction of the loading line as a first direction and are arranged in a direction perpendicular to the conveying direction as a second direction; A material unloading line having a flat belt arranged corresponding to the rear end of the material unloading line and arranged along the first direction; A regulation unit, used for regulating the PCB board to be tested on the loading line in the first direction and the second direction respectively; A flattening part, used for flattening the PCB board to be tested on the flat belt when the PCB board is transported to the predetermined testing position by the unloading assembly line, comprising a pressing plate made of a transparent material located above the flat belt and capable of rising or falling relative to the flat belt; An image acquisition unit, comprising a plurality of cameras located above the pressing plate and corresponding one-to-one to the plurality of wiring connection points, each of the cameras being installed at a predetermined installation position and used to acquire an image of the PCB board at a position corresponding to the wiring connection point; as well as The controller is electrically connected to the loading line, the unloading line, the regulation unit, the regulation unit and the plurality of cameras respectively.

2. The image acquisition device for detecting the position of connection points of PCB wiring according to claim 1, characterized in that: in, The regulating part includes a baffle unit located at the rear end of the loading line and a positioning unit located below the roller. The baffle unit is used to regulate the PCB in the first direction, and comprises a baffle and a baffle driving member for driving the baffle to rise or fall relative to the roller. When the baffle driving member drives the baffle to rise, the upper end of the baffle extends upward to above the roller. The positioning unit is used to regulate the PCB board in the second direction, and includes a plurality of positioning rods arranged at intervals in the first direction and with upper ends extending upward above the roller, and a positioning rod driving component for simultaneously driving the plurality of positioning rods to move in the second direction.

3. The image acquisition device for detecting the position of connection points of PCB wiring according to claim 2, characterized in that: in, The leaning unit further comprises a leaning rod mounting component for mounting the plurality of leaning rods. The positioning rod mounting component is located below the roller and comprises a guide rail arranged along the second direction, a slider slidably mounted on the guide rail, and a moving plate fixedly mounted on the slider and arranged along the first direction. The plurality of positioning rods are respectively fixedly mounted on the movable plate.

4. The image acquisition device for detecting the position of connection points of PCB wiring according to claim 3, characterized in that: in, The positioning rod driving component comprises a driving motor and a transmission belt. The transmission belt is connected to the rotating shaft of the driving motor and the moving plate respectively.

5. The image acquisition device for detecting the position of connection points of PCB wiring according to claim 1, characterized in that: in, The flattening part further comprises a pressing plate lifting driving unit for driving the pressing plate to ascend or descend. The pressure plate driving unit comprises a lifting frame and a pressure plate lifting driving member. The lifting frame comprises a lifting plate and two supporting rods. The lifting plate is located below the flat belt and arranged along the second direction, The support rod is located outside the flat belt, the lower end of which is fixedly arranged at the end of the lifting plate, and the upper end of which is connected to the pressing plate. The pressure plate lifting drive is connected to the lifting plate and is used to drive the lifting frame to ascend or descend. When the pressing plate lifting drive member drives the lifting frame to descend, the pressing plate presses the PCB board flat on the flat belt.

6. The image acquisition device for detecting the position of connection points of PCB wiring according to claim 1, characterized in that: in, The image acquisition unit also includes a camera mounting plate for mounting the camera. The camera mounting plate is provided with a plurality of array holes, each of the array holes corresponding to a first direction coordinate value in the first direction and a second direction coordinate value in the second direction.

7. The image acquisition device for detecting the position of connection points of PCB wiring according to claim 6, characterized in that: in, The edges of the mounting plate are provided with first direction coordinate scale values ​​and second direction coordinate scale values ​​corresponding to each of the array holes.

8. The image acquisition device for detecting the position of connection points of PCB wiring according to claim 6, characterized in that: in, The image acquisition unit also includes two camera lifting driving components that simultaneously drive the multiple cameras to perform an ascending or descending action. The two camera lifting drive components are symmetrically arranged and are respectively connected to the mounting plate.

9. The image acquisition device for detecting the position of connection points of PCB wiring according to claim 1, characterized in that: in, The number of the flat belts is two, and the two flat belts are symmetrically arranged in the second direction.

10. The image acquisition device for detecting the position of connection points of PCB wiring according to claim 9, characterized in that: in, The unloading assembly line also has an in-place sensor for sensing whether the PCB board on the unloading assembly line is conveyed to the predetermined detection position. The in-position sensor is arranged between the two flat belts and below the upper surface of the flat belts.

Images